Sign and Date the Contract - "If an entity is a party to a contract, it is imperative that the signature block properly identifies the party signing on behalf of that entity," writes Michigan attorney Michael J. Hamblin in his website's article How to Properly Sign a Contract so It Will Be Enforceable. The signature block should name the entity, then under the signature, the name and title of the person signing, such as: Jones Plumbing, LLC By: John Jones Manager. Each signee should include the date next to the signature.

Who Can Sign - For partnerships, only general partners can sign a contract, not a limited partner. For LLC's, a managing member or a hired manager can sign. For corporations, the company's president or chief executive officer is presumed to have the authority to sign. For an organization or association, a board president would have the authority, but may require a vote of the governing board to approve the deal.